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Finding the Fourth Proportional to 487,300.12, 731,613.34 and 274,218.58

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Solution

The fourth proportional to 487,300.12, 731,613.34 and 274,218.58 is: 411,701.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,300.12 : 731,613.34 = 274,218.58 : x
  2. Step 2: Convert to fraction form
    487,300.12/731,613.34 = 274,218.58/x
  3. Step 3: Cross multiply
    487,300.12x = 731,613.34 × 274,218.58
  4. Step 4: Simplify right side
    487,300.12x = 200,621,971,203.86
  5. Step 5: Solve for x
    x = 200,621,971,203.86/487,300.12
  6. Step 6: Final answer
    x = 411,701.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.